Stainless Steel Blank Disc Grade 304 Metal Round Sheet Plate Dia Ø50mm - Ø300mm

Measure the outer boundary of the area you need to cover or the bore you are fitting into, then add any overlap or machining allowance. For gasket blanks, add at least 5–10mm beyond the flange face. For decorative inlays, match the recess diameter exactly. If you are unsure, order one size up — it is easier to remove material than to add it.

For purely decorative applications such as signage, medallions, or inlays, thicknesses of 0.3mm–1mm are typically sufficient and keep weight low. For load-bearing brackets, backing plates, or gaskets under moderate clamping pressure, 1.5mm–3mm provides meaningful rigidity. For heavy-duty fixtures or parts subject to repeated mechanical stress, 4mm–5mm stock is appropriate. When in doubt, consult your project's load or pressure specifications.

Grade 304 performs well in most outdoor environments where exposure is limited to rain, humidity, and mild atmospheric pollutants. It is not recommended for continuous saltwater immersion or coastal spray zones where chloride concentration is high — Grade 316 is the standard choice for those conditions. For inland outdoor signage, garden fixtures, or architectural details, 304 is a practical and cost-effective option.

Yes. Grade 304 is one of the most widely welded stainless alloys — use 308L filler rod for TIG or MIG welding. It drills cleanly with HSS or cobalt-tipped bits at moderate speeds with cutting fluid. Laser engraving works well on the mill-finish surface; fibre lasers produce sharp, permanent marks. For CNC milling or turning, use carbide tooling with appropriate feeds and speeds to avoid work-hardening.

Discs are cut from flat sheet stock and are supplied flat within normal sheet flatness tolerances. Thinner gauges (0.3mm–0.5mm) may show minor flex under handling but will lie flat when clamped or bonded. If your application requires tight flatness tolerances (e.g., precision gaskets or optical mounts), a light pass on a surface grinder or lapping plate may be needed after receipt.

Pack quantity varies by size and is shown in the "Qty(pcs)" variant selector — options are 1, 2, or 4 pieces. Larger or thicker discs are typically offered in smaller pack quantities due to weight and handling considerations. Select your preferred quantity alongside the diameter and thickness before adding to cart.

Grade 304 stainless steel is widely used in food processing equipment and is generally considered food-safe in its standard mill finish. However, for regulated food contact applications, verify compliance with the relevant local standards (e.g., FDA 21 CFR, EU Regulation 10/2011) for your specific use case. Surface finish and any secondary coatings or lubricants applied during machining may affect food-contact suitability.